*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: '微软雅黑';
}
body{
    font-size: 16px;
    
    /* width: 7.5rem; */
}
ol,
ul {
    list-style: none
}

a {
    text-decoration: none;
}

a:hover {
    text-decoration: underline
}
.clearfix:after{
    content: '.';
    visibility: hidden;
    clear: both;
    height: 0;
    display: block;
}